2014
DOI: 10.1021/ic501088t
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New Kagome Metal Sc3Mn3Al7Si5 and Its Gallium-Doped Analogues: Synthesis, Crystal Structure, and Physical Properties

Abstract: We report the synthesis, crystal structure, and basic properties of the new intermetallic compound Sc3Mn3Al7Si5. The structure of the compound was established by single-crystal X-ray diffraction, and it crystallizes with a hexagonal structure (Sc3Ni11Si4 type) with Mn atoms forming the Kagome nets. The dc magnetic susceptibility measurements reveal a Curie-Weiss moment of ~0.51 μ(B)/Mn; however, no magnetic order is found for temperatures as low as 1.8 K. Electrical resistivity and heat capacity measurements s… Show more

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Cited by 16 publications
(14 citation statements)
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“…[22,23] From this fit we obtain γ = 10.9 mJ mol -1 K -2 and β = 3.0 mJ mol -1 K -4 , values that are relatively high compared with that of metals and lower than that of oxides and other wide band gap semiconductors. [24][25][26] From the low temperature C p data an estimation of the Density of States (DOS) at the Fermi Level, N(E F ), can be obtained by using the relation [22,27] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 where λ e-ph is the electron-phonon coupling constant. Setting λ e-ph to zero as a first approximation N(E F ) = 4.6 states eV -1 per formula unit.…”
Section: Resultsmentioning
confidence: 99%
“…[22,23] From this fit we obtain γ = 10.9 mJ mol -1 K -2 and β = 3.0 mJ mol -1 K -4 , values that are relatively high compared with that of metals and lower than that of oxides and other wide band gap semiconductors. [24][25][26] From the low temperature C p data an estimation of the Density of States (DOS) at the Fermi Level, N(E F ), can be obtained by using the relation [22,27] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 where λ e-ph is the electron-phonon coupling constant. Setting λ e-ph to zero as a first approximation N(E F ) = 4.6 states eV -1 per formula unit.…”
Section: Resultsmentioning
confidence: 99%
“…[16,17] From this fit we obtain  = 361 mJ mol -1 K -2 and  = 51 mJ mol -1 K -4 , values that are relatively high compared with that of metals but lower than that of oxides and other wide band gap semiconductors. [18][19][20] Using the relation 13 4 12 5…”
Section: Resultsmentioning
confidence: 99%
“…For Yb 52 final state effects are much smaller than, for example Ce so that we omit an Anderson impurity model in the formalism 53 of Gunnarson and Schönhammer. 54 Instead we assume that the f 13…”
Section: Yb Valencementioning
confidence: 99%
“…The methods are based on the presence of a core hole that acts differently on the two valence configurations that form the intermediate valent ground state (c 13 f 13 + c 14 f 14 ). Accordingly, spectral features (cf 13 and cf 14 L with c representing a core hole) appear in the XAS or PES spectra. The intensities I(cf 13 ) and I(cf 14 L) (referred to as I(f 13 ) and I(f 14 ) for simplicity) of these structures can be related to the weights (c 2 13 , c 2 14 ) of the f states in the initial state.…”
Section: Yb Valencementioning
confidence: 99%
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